Safety stop for barrels



Dec. 7, 1948. E. C. LMNGSTON 455,426

SAFETY lSTOP FOR BARRELS Filed sept. e, 1,946

Patented Dec. 7, 1948 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to safety Stops for barrels and the like.

An object of the invention is to provide a safety device to be attached to the ends of barrel racks, to prevent barrels from rolling off the racks.

Another object of the invention is to provide a barrel rack safety stop which is self locking, permitting the barrel to roll over it onto the rack, but preventing the barrel from rolling in the opposite direction ofi the rack.

A further object of the invention is to provide a barrel rack safety stop which is self locking, but which is also provided with convenient means operable by hand, for releasing the stop to allow a barrel to roll off the rack, and which automatically restores itself to locked position after, the barrel has rolled by.

Still another object of the invention is to provide a barrel rack safety stop which is simple in design, inexpensive to manufacture, and effective for the purpose intended.V

Other objects and advantages of the invention will become apparent from the following description of a preferred embodiment thereof as illustrated in the accompanying drawings, and in which,

Figure 1 is an elevational view of a barrel rack safety stop according to my invention, and

Figure 2 is a side elevational View as seen from the right side of Figure 1.

At the present time barrel rack stops are all hand operated, and the common practice of workmen is to leave them in the off position, thus causing many serious accidents. The present device, as described herein, overcomes these disadvantages, and allows loading of barrels on racks without removal of the stops, and also allows the barrels to be removed from the racks With maximum protection to the workmen.

Reference is now had to the drawings, in which like reference characters denote similar parts throughout the several views. As shown, there is a framework with uprights 2 supporting lateral beams or channels t which in turn support pairs of spaced channels 6 which thus form rails or tracks onto which barrels 8 maybe rolled and a number of them supported and stored on a single pair of barrel tracks 6. The drawings show only one side of the framework with only one track 6 illustrated, it being understood that the other track of the pair is similar to the track 6 shown, but has its flanges in opposed position relative thereto, the barrels rolling on the upper surfaces l of the tracks 6.

Each track 6 is provided with a safety stop zas shown in Figure 2. A strip bar or shaft 4U has generally indicated at I2. The stop 6 includes a base plate I4 which is secured in a vertical plane to the side surface I6 of the web i8 of the barrel track 6, the plate i4 being so arranged that its 'upper surface 20 lies in the same plane as the surface l0 of the track 6, as best shown in Figure 2.

A cam member 22 has an aperture 24 for the reception of a fastening bolt 26 extending through aligned apertures formed in the plate i4 and the channel 6, and in conjunction with a nut 2l thus serves to hold the stop l2 securely upon the channel 6. The portion of bolt 26 passing through aperture 24 is unthreaded, to allow the cam member to pivot on the bolt, and the bolt is enlarged to form a ange 28 for retaining the cam member on the bolt.

A cylindrical shaft 30 has one end portion 32 reduced and extending through an aperture 34 formed in the base plate I4. The end of the shaft 38 also extends through an aperture 35 formed in a first lever 36, which is thus pivoted on the shaft, and is retained thereon by a nut 38 threaded onto the protruding end of the shaft its reduced end portion 42 extending through an aperture 44 formed in the lower end 46 of the first lever 36, and is retained therein by a nut 48.

The upper end 50 of the rst lever 36 is apertured to receive a pivot pin 52 extending through a matching aperture formed in the lower end 54 of a second lever 56 which is also apertured at 58 to receive a pivot pin or stud 66 so arranged that the second lever 56 and the cam member 22 are free to pivot about the pivot pin 6D. The second lever 56 has an arm 62 with a curved suri face 64 inclined as shown in Figure 1, against which the barrel 8 may bear as it is rolled onto the racks 6.

A tension spring 66 has one end 6B engaging around the protruding portion 16 of the pin 52, and has its other end 12 engaging around the protruding portion 'I4 of the bolt 26. It is thus apparent that the levers 3'6 and 56 form a toggle joint.

Barrels are loaded on these racks by some form of elevators. When the barrel 8 rst enters the runway of the rack, it strikes the surface 64 of the trip arm 62, camming it downward in a clockwise direction about pivot pin 60, thus causing the second lever 56 to pivot about pin 60 in a clockwise direction, and the first lever 36 to pivot about pivot 32 in a counter-clockwise direction, to the positions indicated by the dotted lines in Figure 1, and carrying the pivot pin 52 to the left to position 53, and extending the spring 66 as shown.

This causes the cam stop member 22 to be pivoted about pivot 26 in a counter-clockwise direction from its upraised barrel stopping position shown in full lines in Figure 1, to a position indicated in dotted lines in the view so that both the second lever 56 and the cam member 22 do not extend above the level of the surface 20 of the plate I4. and the barrel 8 is free to pass the stop and roll into position at 9.

When the barrel has rolled to the left of the stop members to position 9, the spring 66 is free to draw the members back to their original positions shown in full lines in the views, with'l the cam stop member 22 upraised as shown,y to block movement of the barrel 9 to the right. When a barrel 9 is to be removed from the rack, then the Workman will pull on trip shaft 40 in the direction of the arrow 'i5 in Figure 1, causing the toggle lock formed by the levers to be released and moving the members to their unlocking positions, shown in dotted lines in the View, and the barrel 9 is then free to be rolled to the right and on the rack, the parts resuming their full line barrel blocking positions when the barrel has rolled past the stop member, as explained.

The stop members are preferably installed in pairs on both tracks, and are connected by means of the shafts 36 and 46 so as to operate simultaneously. It is apparent that this is -a safety device which is automatic in operation, and which does not dep-end upon the Workmen to prevent accidents,

Although I have described a preferred embodiment oi my invention in specic terms', it is to be understood that various changes may be made in size, shape, materials and arrangement Without departing from the spirit and scope of the invention as claimed. f

I claim:

l. A safety stop comprising abase plate adapted to be secured to a barrel track with no portion thereof extending above said track, a cam member pivoted on said base plate and having a stop portion thereof normally extending above said track to block passage of a barrel off said track, a pair of toggle levers pvotally connected to each other, the rst lever being pivoted on said base plate and having an extended trip arm, the second lever being pivoted intermediate its ends on said cam member and having an extended release lever portion extending above said track for being engaged by a barrel being rolled onto said track, resilient means biasing said toggle levers into track blocking locked position, whereby a barrel being rolled onto said track will bear against said release lever portion, depressing it and rotating said toggle levers to unlocked position, whereby saidcam member is carried to a position below said track to unblock the track, said extended trip arm of the first lever being adapted for being manually actuated to unblock the track when desired.

2.` A'safety stop comprising a base plate adapted for attachment to a barrel track with no portion thereof extending above the track, a cam member pivoted on said base plate and having a stop portion normally extending above the track to block the rolling of a barrel off said track, a pair of toggle levers pivotally connected to each other, the rst lever being pivoted on said base plate, the second lever being pivoted intermediate its ends on said cam member and having an extended release lever portion extending above said track for being engaged by a barrel being rolled onto said track, a, spring biasing said toggle levers into track blocking locked position, whereby a barrel being rolled onto the track will bear against said release lever portion, depressing it and rotating said toggle levers to unlocked positions, whereby said cam member is carried to a position below said track.

EDMUND C. LIVINGSTON.

REFERENCES CITED The following references `are of record in'the le of this patent:

UNITED STATES PATENTS Number Name Date 1,387,036 Benson et al Aug. 9, 1921 1,819,032 Lehman Aug. 18, 1931 

